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Proceedings Paper

Radiometric calibration stability of the FIRST: a longwave infrared hyperspectral imaging sensor
Author(s): Vincent Farley; Martin Chamberland; Alexandre Vallières; André Villemaire; Jean-François Legault
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Paper Abstract

Emerging applications in Defense and Security require sensors with state-of-the-art sensitivity and capabilities. Among these sensors, the imaging spectrometer is an instrument yielding a large amount of rich information about the measured scene. Standoff detection, identification and quantification of chemicals in the gaseous state are fundamental needs in several fields of applications. Imaging spectrometers have unmatched capabilities to meet the requirements of these applications. Telops has developed the FIRST, a LWIR hyperspectral imager. The FIRST is based on FTIR technology to yield high spectral resolution and to enable high accuracy radiometric calibration. The FIRST, a man portable sensor, provides datacubes of up to 320x256 pixels at 0.35 mrad spatial resolution over the 8-12 μm spectral range at spectral resolutions of up to 0.25 cm-1. The FIRST has been used in several field measurements, including demonstration of standoff chemical agent detection. One key feature of the FIRST is its ability to give calibrated measurements. The quality of the radiometric and spectral calibration will be presented in this paper. During the field measurements, the FIRST operated under changing environmental conditions while many calibration measurements were taken. In this paper, we will present the stability of the calibration of the FIRST obtained during the field campaigns.

Paper Details

Date Published: 18 May 2006
PDF: 11 pages
Proc. SPIE 6206, Infrared Technology and Applications XXXII, 62062A (18 May 2006); doi: 10.1117/12.665888
Show Author Affiliations
Vincent Farley, Telops Inc. (Canada)
Martin Chamberland, Telops Inc. (Canada)
Alexandre Vallières, Telops Inc. (Canada)
André Villemaire, Telops Inc. (Canada)
Jean-François Legault, Telops USA Inc. (United States)

Published in SPIE Proceedings Vol. 6206:
Infrared Technology and Applications XXXII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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